Related Questions
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4
When current and voltage arte in phase in an ac circuita the ___ is equal to zero.
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4
What is the most convenient way of achieving large capacitance?
A. By using multiplate construction
B. By using air as dielectric
C. By decreasing distance between plates
D. By using dielectric of low permittivity
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4
Another term of the quality factor of the resonant circuit.
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4
A three-by-threea series-parallel matrix of resistorsa all having the same ohmic valuea would have a net resistance of
A. One-third the value of a single resistor
B. Three times the value of a single resistor
C. The same value as a single resistor
D. Nine times the value of a single resistor
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4
The resistance of an insulator ___ when its temperature is increased.
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4
And ideal current source has an internal conductance of _____ siem
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What capacitance exists not through design but simply because two conducting surfaces are relatively close to each other?
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Electron flow assumes charges flow from
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With double the number of turns by the same length and areaa the inductance is
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The mutual inductance between two coils is ___ the reluctance of magnetic path.
A. Directly proportional to
B. Inversely proportional to
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A capacitance of 6 ��F means
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In a multiple capacitora the plate area is
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The charging of a capacitor through a resistance obeys
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The Q-factor of a series resonant circuit is also known as
A. Current magnification factor
B. Voltage magnification factor
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The reactance curve is a plot of frequency versus _____ for a series RLCcircuit
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The hot resistance of an incandescent lamp is about ___ times its cold resistance.
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In a series RLCcircuit
A. Increasing the frequency decreases the resistance
B. Increasing the frequency increases the resistance
C. Both XLand XCchange as frequency changes
D. Impedance will always decrease
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Which of the following does not affect resistance?
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An intermittent and non-symmetrical alternating current like that obtained from the secondary winding of an induction coil
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4
A capacitor is basically constructed of
A. Two conductors separated by a dielectric
B. Two dielectric separated by a conductor
C. Conductors and dielectric
D. Conductors and semiconductors
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4
What is the temperature coefficient of the resistance Eureka?
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4
What rating of a resistor determines its ability to absorb heat?
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4
Which of the following is neither a basic physical law nor deliverable from one?
C. Kirchhoff�s first law
D. Kirchhoff�s second law
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4
Form its definitiona the unit of electric fielda is the N/C and equivalent unit of is the
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The symbol Q refers to
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What is the rms value of a square wave?
B. Equals its peak-to-peak value
C. Peak divided by square root of two
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When two coils of identical reactance are in parallel without mutual inductancea the reactance of the combination is ___ the reactance of each coil.
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4
A switch designed to have low capacitance between its terminal when open.
C. Anticapacitance switch
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4
The value of temperature coefficient ( ) is dependent upon
A. The nature of material and temperature
B. The length of material
C. The cross-sectional area of the material
D. The volume of the material
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In dividing or multiplying phasor quantitiesa ___ form is used.